85259387 has 2 divisors, whose sum is σ = 85259388. Its totient is φ = 85259386.

The previous prime is 85259371. The next prime is 85259389. The reversal of 85259387 is 78395258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85259387 - 2⁴ = 85259371 is a prime.

Together with 85259389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85259389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42629693 + 42629694.

It is an arithmetic number, because the mean of its divisors is an integer number (42629694).

Almost surely, 2^85259387 is an apocalyptic number.

85259387 is a deficient number, since it is larger than the sum of its proper divisors (1).

85259387 is an equidigital number, since it uses as much as digits as its factorization.

85259387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 47.

The square root of 85259387 is about 9233.6009768670. The cubic root of 85259387 is about 440.1297602824.

The spelling of 85259387 in words is "eighty-five million, two hundred fifty-nine thousand, three hundred eighty-seven".